// Copyright (c) Microsoft Corporation
// All rights reserved.
//
// MIT License
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
// documentation files (the 'Software'), to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
// to permit persons to whom the Software is furnished to do so, subject to the following conditions:
// The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
// BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

const atoi = (str) => {
  const int = parseInt(str);
  return isNaN(int) ? 0 : int;
};

const convertMemoryMb = (memoryStr) => {
  let memoryMb = atoi(memoryStr);
  switch (memoryStr.replace(/[0-9]/g, '')) {
    case 'Ti':
      memoryMb *= (1 << 20);
      break;
    case 'Gi':
      memoryMb *= (1 << 10);
      break;
    case 'Mi':
      break;
    case 'Ki':
      memoryMb /= (1 << 10);
      break;
    default:
      memoryMb /= (1 << 20);
  }
  return atoi(memoryMb);
};

module.exports = {
  atoi,
  convertMemoryMb,
};
